Subtract 42/7 from 12/5
1st number: 2 2/5, 2nd number: 6 0/7
12/5 - 42/7 is -18/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 5 × 7 = 35,
12/5 = 12 × 7/5 × 7 = 84/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
42/7 = 42 × 5/7 × 5 = 210/35 - Subtract the two like fractions:
84/35 - 210/35 = 84 - 210/35 = -126/35 - After reducing the fraction, the answer is -18/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/5-42/7 12/5-84/7 12/10-42/7 12/5-42/14 36/5-42/7 12/15-42/7 12/5-42/21 60/5-42/7 12/25-42/7 12/5-42/35 84/5-42/7 12/35-42/7 12/5-42/49